Data from: Heat stress increases risk taking in foraging shorebirds ...
1. Animals often face a trade-off between food acquisition and predation/disturbance avoidance. Yet the extent to which this trade-off is affected by modulating factors such as thermal risk and foraging opportunities has been largely overlooked. 2. Here, we examined the influence of temporal and env...
| Main Authors: | , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.v9s4mw70x https://datadryad.org/stash/dataset/doi:10.5061/dryad.v9s4mw70x |
| Summary: | 1. Animals often face a trade-off between food acquisition and predation/disturbance avoidance. Yet the extent to which this trade-off is affected by modulating factors such as thermal risk and foraging opportunities has been largely overlooked. 2. Here, we examined the influence of temporal and environmental gradients on the flight initiation distance (FID, the distance at which animals flee from an approaching human-simulated predator) and escape mode (flying/low risk versus running/low cost) in 16 species of shorebirds foraging on tidal flats of the Bijagós Archipelago, Guinea-Bissau. We measured escape responses throughout the low tide period during wet and dry seasons and simultaneously recorded microclimate variables and occurrence of heat-reduction behaviour (ptiloerection). Furthermore, we measured corticosterone metabolites (CORTm) from droppings in red knots Calidris canutus to assess whether ptiloerection is associated to a physiological stress response to hot conditions. 3. Overall, birds ... : All analyses were performed in R 4.0.2 (R Core Team, 2020). All data files (.csv) can be opened with R or other programs. ... |
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